Telegraphy.



W. M. BRUCLM.

TELEGRAPH!- APPLICATION nun FEB. 12. 1914.

1,250,961 a Patented Dec. 25, 191?.

2 SHEETSSHEET I.

w. M. BRUCE,JR.

TELEGRAPHY.

APPLICATION FILED 8.12.1914.

1,250,961. Patented Dec. 25,1917.

2 SHEETS-SHEET 2.

UNITED STATS AT WILLIAM IE. BRUCE, 53., OF SPRINGFIELD, OHIO, ASSIGNOR TO THE UNITED TELE- GRAPH & CABLE COMPANY, OF SPRINGFIELD, OHIO, A CORPORATION OF OHIO.

TELEGRAPHY.

Specification of Letters Iatent.

Patented Dec. 25, 19nd.

Application filed February 12, 1914. Serial No. 818,259.

applied to submarine cables or conductors of high capacity.

The particular object of my invention is to provide means by which the ordinary code of signals such as are now in common use in submarine telegraphy may be recorded with greater certainty and speed than with the apparatus now in general use, and my invention consists in the circuits and apparatus hereinafter described and set forth in the claims.

In the accompanying drawings:

Figure 1 is a diagrammatic view illustrating circuits and apparatus embodying my invention; it is to be understood that the apparatus herein described is typical only.

Figs. 2, 3, 4, 5, 6 and 7 are views illustrating the different types or characters which may be used with the apparatus illustrated.

Figs. 8 and 9 show modifications.

Generally speaking my improvement consists in employing a relay or relays adapted to respond to impulses of current in connection with a recording device which has one 85 or more marking devices adapted to record a definite character for each impulse of current of the particular kind or polarity.

In the apparatus as generally used in this country for recording signals in submarine telegraphy, a recording device is used which operates on a continuously moving tape to record impulses of different polarity above or below the center of the tape. These recordings, however, are not always wholly legible on account of line disturbances which tend to modify or distort the characters or an element of the character; also the apparatus is not capable of very great speed. In my improved device I employ devices adapted to indicate or record distinct characters,

one for each kind of impulse, the characters being equivalent to the usual dots and dashes or the markings above below the line produced by impulses of different polarity to in the present apparatus. In connection with this, I preferably used two biased polarized relays which in turn preferably control local relays which operate the recording device. These biased polarized relays are so arranged that they will operate their local relays by impulses of difierent polarity, positive and negative, and the recording device is operated by the local relays so that one of the marking devices will operate with one relay and the other marking device with the other relay, and these markings may be made 011 a. tape in the same line or in different lines. The markings may be distinguished by different colors or by distinctly different characters or both according to the desire of the operator.

The apparatus which I preferably employ consists of two electromagnets which control marking devices not unlike ordinary type bars of a typewriter which are arranged in connection with a moving tape and an inking ribbon somewhat similar to that used in typewriters. The electromagnets are in circuit with the local controlling relays so that each relay will control its magnet and operate its type bar to impress upon the tape the particular character or marking represented by that type or that relay. A simple arrangement is shown in the diagram drawing in which a andb represent biased polarized relays which are placed in circuit with the cable or conductor 0 in the usual manner. These biased polarized relays operate local controlling relays d and e from the battery X over a circuit which passes through the armature a, and forward contact a of the relay (1, and armature b, and forward contact b of the relay 6 thence through the relays d and e to battery X. This circuit is preferably arranged so that the circuits are normally closed at contacts a and 6 so that the relays d and e will be normally energized. The normal relays d and 6 control electromagnets f and g from battery X, the circuit from which passes through the armature 01, back con tact d of relay 0?, and armature e and back contact 6 of relay 6. The circuit from back contact (Z passes through wire 1 to electromagnet f and by wires 2 and 3 to battery X, the circuit from contact 6 passing over wire 4, to electromagnet g and by wires 5 and 3 to battery X. The magnets f marking devices such as type bars f and g which type bars are arranged preferably above a moving tape 6 (which may be caused to move in any well known manner) and between this ta e and the type bars, I preferably provi e an inking ribbon r having the well known means for moving it lntermittently to bring new surfaces under the type bars. These type bars are provlcled with suitable type or markmg devices to readily distinguish one from the other, these may be letters or they may be long or short marks or horizontal and vertical marks as shown in Figs. 2 to 6, or any other marks desired and are preferably arranged so that they will each strike at the same point on the paper and thus make the characters in a single horizontal line on the movlng tape or they may be arranged so that they will strike at different positions on the moving tape in which case each bar might have the same character, as shown in Figs. 5 and 6. As thus described, it will be seen that if an electrical impulse of one character, for instance a positive impulse, should come over the cable and the biased relay a was arranged to respond to that impulse and move its armature away from its contact a then the relay (1 would be deenergized which would cause its armature d to engage the back contact J and thus close the circuit for and energize the magnet 7, thus causing it to move its type bar f toward the tape t and through the inking ribbon make an imprint thereon, while a negative impulse would cause the armature b of the biased relay 6 to move away from its contact 6 and thus break the circuit for the normal relay 6 which would become deenergized and allow its armature to engage the contact 6 and close the circuit for the magnet g through the battery X thus energizing said magnet and cause it to operate the type bar 9 to make an impress on the tape t in the same manner. It will be seen by this arrangement that so long as the positive and negative impulses of circuit are suflicient to move the armature of either biased polarized relay away from its contact sufficiently only to break the circuit of the normal relay the markings produced by the operation of the electromagnets f and 9 will be assured and since this marking depends upon local circuits and local conditions only they may be adjusted to be absolutely distinct and legible in all cases and the speed of these markings is only limited by the speed at which the positive and negative impulses can be impressed upon the cable with suflicient electromotive force to move the armature of the biased polarized relays to the extent necessary to break the circuit of the normal relay.

If it is desired to distinguish the character impressedupon the ribbon more distinctly than by the diiferent markings used on the type bars or in the event that one marking only was used or employed, by omittin one of the type bars, means may be emp oyed for varying the character of the ribbon. For instance as shown in Fig. 1, the ribbont 7' is made (as is quite usual) of two colors, red and black, and a pivoted lever s is employed to shift the position of the ribbon so that either the red or black will be brought into position between the type bar and the tape. Various well known methods may be employed for mechanically accomplishing this. I have shown a very simple method, however, by; having the proectmg end 8' of the lever s, in proximity to the core 9 of the electromagnet 9 so that each time the electromagnet g is energized, the armature lever s will be drawn toward the core and thus move the lever s and shift the ribbon from the normal color, say black, to the other color, such as red, the lever 8 being provided for the purpose with a bifur cated portion 3 through the forks of which the ribbon r is adapted to pass.

While I preferably use a continuously operating tape, it may be desirable in some cases to sto this tape at the instant that the marking ta es place. I have shown a simple method for accomplishing this in which an electromagnet h is employed for controlling one of the feed rolls h, the other roller k for the tape being adapted to be continuously operated from a suitable motor in a well known way. This magnet h is controlled from battery X over branch circuits 6 and 6 normally open at contacts 7 and 7 and 8 and 8. The armatures f and g are provided with extensions which are adapted to engage the springs 7 and 8 and when the said armature f or g is moved by the energization of magnet f or g to cause said armature to engage with the spring 7 or 8 and close the circuit for and energize the magnet h. This magnet h has an armature 7L pivoted at h and extended and bifurcated to hold the roller it so that each time the magnet h is energized the roller it would be moved away from the tape slightly against the spring 71. and thus cause the tape to stop so long as the magnet was energized: the spring 71, acting to impress the roller it against the tape thus causing the tape to be continuously operated so long as the magnet 71. was denergized. It will be seen that apparatus of this character connected in the circuits as described will, from an electrical impulse of a certain character, such as positive or negative, cause to be imprinted upon the moving tape a positive character of uniform marking, and unaffected by simple line disturbances.

In Fig. 8, I have shown the apparatus modified so' that only one marking device 7 is employed, operated by its electromagnet f; the electromagnet g in this case being used merely for shifting the inking ribbon to produce markings of different color or to shift the tape to produce markings in difierent locations as indicated, for instance, in 'Figs. 6 and 7. In this arrangement the relays d and e are both connected through local circuits from battery X to the electromagnet f, while a third relay j is normally energized from the forward contact 6 of relay e, so as to operate the electromagnet, g, only when the relay 6 is operated. In this way the marking device f will mark the tape upon either a positive or negative impulse while the character of the marking will be changed for each kind of impulse by the shifting of the ribbon or the tape by the energizing of the electromagnet g.

In Fig. 9, I have shown a further modification where an indicating device such as a sounder is is employed and I provide means by which this sounder will be made to operate with long and short impulses so as to provide dots and dashes when the respective magnets f and g are operated. This may be done in various ways, but I have shown a simple method of accomplishing this by substituting the sounder k for the electromagnet h, in Fig. 1 and forming the contacting devices 7 and 7, 8 and 8, so that one of these contacting devices will produce a short impulse when its electromagnet is operated and the other will produce a long impulse. That is, as shown, if when the electromagnet f is operated it operates its marking device, it will cause the springs 7 and 7' to contact for a short interval, owing to the length of movement of the respective parts, while the operation of the electromagnet 9 will cause the contacts 8 and 8 to engage each other a longer interval so that these markings on the tape representing difl'erent impulses would be transmitted to the indicator in dots and dashes, similar to the Morse code. It is equally obvious that either of these devices might be used separately.

Having thus described my invention, I claim 1. In a recording device for telegraph systems, a printing or marking mechanism, electro-magnets for operating the same, means for operating said electro-magnets from current impulses of different characters, a traveling tape to receive the imprint from said marking devices, and means for temporarily stopping said tape while the marking device is impressed against the same.

2. In a recording device for telegraph systems, a printing or marking mechanism, electromagnets for operating the same, polarized biased relays for operating said electromagnets by current impulses 0 different polarities, a traveling tape to receive the 1mprint from said markin devices, means for temporarily stopping t e ta e while the marking device is impresse against the same.

3. In a telegraph recorder, a moving tape and marking devices to Work in connection therewith, electromagnets for controlling the marking devices, relays adapted to respond to different current impulses to control said magnets, and an electromagnet operated simultaneously with said controlling magnets to temporarily stop the movement of said tape as and for the purpose specified.

4. In a recording device, electro-magnetically operated markers, a moving record strip and an inking device between said markers and said record strip, and means for shifting said inking device upon the operation of one of said marking devices to cause the said marking device to record in a different color from the other, as specified.

5. In a recording device, electro-magnetieally operated markers, a moving record strip, an inking device having a plurality of colors and an electro-magnetic device for shifting the inking device, simultaneously with the operation of one of said markers.

6. In a recordin device, electro-magnctically operated mar ers, a record strip therefor, an inking device, means for feeding said record strip, means for shifting said inking device, electro-magnet devices operating simultaneously with the markers to temporarily stop said feeding mechanism, shifting means for said inking device, operating simultaneously with one of said markers to cause said marking device to record in a different color from the other marking device.

In testimony whereof, I have hereunto set my hand this 4th da of February, 1914:. WILLI M. BRUCE, JR. Witnesses:

GHAs. I. WELCH, ES'IHER E. PFEIFER. 

